My ears itch so bad most of the time. I have eczema in my ear canals and they get "weepy" and the fluid trickling along the ear canal is what adds to the itching.
Also the wax in my ears is quite thin and it too tends to "trickle" and exacerbate the itching.
I have a prescription ear drop that I use for the itching. It's called "Garasone". It's a combination of cortizone and gentamycin.
Be careful cleaning your ears because you can be jamming wax and sloughed off skin against your ear drum.